四年级计算题加减乘除小数和简便运算也行!.急.
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![四年级计算题加减乘除小数和简便运算也行!.急.](/uploads/image/z/365921-17-1.jpg?t=%E5%9B%9B%E5%B9%B4%E7%BA%A7%E8%AE%A1%E7%AE%97%E9%A2%98%E5%8A%A0%E5%87%8F%E4%B9%98%E9%99%A4%E5%B0%8F%E6%95%B0%E5%92%8C%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%E4%B9%9F%E8%A1%8C%21.%E6%80%A5.)
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